Vise



July 6, 1965 KYUJI NAGAMORI YISE 2 Sheets-Sheet '1 Filed May 14, 1963FIG. 1.

INVENTOR KYUJ! NAGAMORI BY )f/wwmvv ATTORNEY July 6, 1965 KYUJ! NAGAMORIVISE 2 Sheets-Sheet '2 Filed May 14, 1963 FIG. 5.

FIG I KYUJI NAGAMORI FIG.6.

BY 4345 K/MW ATTORNEY United States Patent 3,193,211 VISE KyujiNagamori, 63 S-chome Honcho, Kawaguchi-shi, Saitama-ken, Japan 7 FiledMay 14, 1963, Ser. No. 280,224 2 Claims. (Cl. 269-181) This inventionrelates to an improved vise.

Generally in the vise, holding or releasing an object therein isachieved by rotating a vise screw. Therefore, when gripping jaws of thevise are to be opened or fully closed thereby, a considerable amount ofscrewing will have been made by hand. Thus it is very difiicult to carryout a quick opening or closing of the gripping jaws of the vise and thisis utterly inefficient in handling. Meantime a number of different typesof the vise, that is, the socalled quick gripping vise have beenproduced in the aim of removing such inconvenience. However, theconventional vises, although they might be able to open or close theirgripping jaws in a quick manner, have such defects that prevent thegripping of an object securely due to the long travel of the partsprovided in the range of tightening operation.

The present invention contemplates overcoming such disadvantages in theconventional vises or in so-called quick gripping vises.

A preferred embodiment of this invention is illustrated in theaccompanying drawings in which:

FIG. 1 and FIG. 2 are perspective views showing the way of handling thevise of the present invention.

FIGURE 3 is a longitudinal section view of the vise.

FIG. 4 and FIG. 5 are perspective views on an enlarged scale of theessential parts of the vise.

FIG. 6 is an enlarged scale section view taken along the line VI-VI inFIG. 3.

FIG. 7 is an enlarged scale section view showing the turned-to positionfrom the original position of the part in FIG. 6.

With 1 is shown a stationary gripping jaw and 2 is a gripping jawprovided on a slide 5. 3 is a vise screw to move the said sliding jaw 2forward and backward. 4 is a handle. 5 is a sliding part. 6 is theguideway in a stationary part. C represents an opening between the twogripping jaws.

The steps of handling will be explained first, leaving aside thestructure thereof which structure is mentioned hereinafter. In this way,characteristics of this invention will be outlined in a moreunderstandable manner.

To widen the opening C in a quick way, turn the handle 4 throughapproximately 360 in the direction of arrow A1 as shown in FIG. 1 untilthe handle 4 is positioned upright and then, in this position, pull thehandle in the direction of arrow A2, allowing the sliding part with thegripping jaw 2 to move in the same direction. In this way, the openingis widened between the gripping jaws 1 and 2.

Now place an object W in the opening C and move the handle 4 while beingupright in the direction A3 until the sliding gripping jaw 2 contactsthe object W. Then turn the handle 4 approximately a quarter of a circlein the direction A4 and thereafter screw the handle 4 in the directionA5 until the object is held tightly.

For releasing the object from the vise, turn the handle 4 in thedirection A1 and thence pull the handle in the direction A2 as shown inFIG. 1. Thus the opening between the two jaws is widened allowing theobject to be released therefrom.

From the above explanation of the steps of handling this vise it may berealized how much more easily this vise can be handled.

The mechanical structure of this vise is as follows:

Referring to FIGS. 3-5, a pair of half nuts 7 and 7 and a cam 8 aremounted on the axis of the said vise screw 3 on the stationary part.Asshown in FIG. 3, when the said half nuts 7 and 7 are in retractedrelation to each other, the vise screw 3 is engaged therebetween. Inthis condition, the vise screw 3 accompanied with the upper jaw 2 in thesliding part is moved forward by rotating the vise screw 3 in thedirection A5.

In FIG. 3, reference 9 represents a supporting frame which is secured toa table or bench with holding down bolts 9. The stationary uppergripping jaw 1 is integrally joined to this supporting frame 9. Also 10represents a guide in a pair of half nuts '7 and 7 and 11 is a couplingbolt by means of which the upper half nut 7 and the lower half nut 7 areconstrained to face each other. 12 is a coiled spring whereby the upperhalf nut 7 and the lower half nut 7 are biased towards each other. Theearn 8 is interposed between the half nuts in the registering holes ofthe upper and lower half nuts, 7 and 7 By turning the said cam 8, thehalf nuts are closed or opened, in consequence of which these nutsengage or disengage the vise screw 3.

In the center of the cam S, a free wheel mechanism is provided. That is,a boss 13 (see FIGS. 5 and 6) is slidably inserted in the cam 8 andbetween the said cam 8 and the boss 13, a spring 15 with a pin 14 at itsend is interjacently attached. This pin 14 is to be engaged with ordisengaged from a catch 16 which is provided on the cam 8.

In FIG. 6, when the boss 13 is turned in the direction A4, the cam 8 isalso turned in the same direction, while the boss 13 is turned in thedirection AS, the cam 8 does not turn.

When the cam 8, in the position as shown in FIG. 6, turns through itsposition coincides with that shown in FIG. 7 wherein the half nuts 7 and7 open againsk the force of the spring 12. The boss 13 has a key 17along the inner surface thereof which slidably fits a groove 18 providedalong the axial direction of the vise screw 3. This key 17 engaging thesaid groove 18 of the vise screw 3 enabies the boss 13 to turn as thevise screw turns, where the vise screw 3 itself moves forward inrelation to the boss 13.

In particular, with reference to FIG. 6, when the said vise screw 3turns in the direction AS, the boss 13 is turned too in its ownposition, but this is not moved either forwardly or backwardly whilstthe vise screw alone moves forward, hence the latter is engaged with thehalf nuts 7 and 7 The vise screw 3, when in the position shown in FIG. 7may be either pulled or pushed in respective directions A2 or A3independent of the boss 13 and key 17.

With thehandle 4 attached to the vise screw 3 at its end, it ispreferred that the line LL on the cam 8, that is taken between thecrests of its ends, be kept substantially parallel to the handle 4 inupright position. This is because the rotary position of the cam 8,being inside the housing as illustrated in FIG. 3, is not noticeable,nor is it possible to make sure that the half nuts are fully open orclosed. However, by positioning the handle 4 as explained above, therotary position of the cam 8 can always be known.

In the present invention as disclosed above, the opening C can bequickly regulated. Further, this device needs no special handle inoperating the half nuts 7 and 7 Hence such operations as opening andclosing of the half nuts, 7 and 7 or forwarding and backing of thesliding jaw 2 can be made even with a single hand. Accordingly, holdingan object with one hand, all operations with the vise can be carried outwith the other hand whereby the working efiiciency is greatly increased.

Iclaim: r

1. In a vise having a slidable gripping jaw adapted to be movedforwardly and backwardly in relation to a stationary gripping jaw, apair of half nuts mounted'on the stationary jaw, a 'vise screw having akey groove; a cam between said pair of half nuts, said cam having convexcrests at its outer ends, a free wheeling mechanism between the saidvise screw and cam engaging said'key groove, and a handle attached tothe outer end of the vise screw.

2. In a vise as defined by claim 1 wherein the plane I of motion of thehandle attached to the outer end of the said vise screw is parallelsubstantially to a plane containing the crests of the ends of the saidcam. References Cited by the Examiner UNITED STATES PATENTS 298,225 5/84Northall e 269-225 WILLIAM W. DYER, 13., Primary Exam ner. ROBERT c.RIORDON, Examiner.

1. IN A VISE HAVING A SLIDABLE GRIPPING JAW ADAPTED TO BE MOVEDFORWARDLY AND BACKWARDLY IN RELATION TO A STATIONARY GRIPPING JAW, APAIR OF HALF NUTS MOUNTED ON THE STATIONARY JAW, A VICE SCREW HAVING AKEY GROOVE, A CAM BETWEEN SAID PAIR OF HALF NUTS, SAID CAM HAVING CONVEXCRESTS AT ITS OUTER ENDS, A FREE WHEELING MECHANISM BETWEEN THE SAIDVISE SCREW AND CAM ENGAGING SAID KEY GROOVE, AND A HANDLE ATTACHED TOTHE OUTER END OF THE VISE SCREW.